William p



(No Model.)

W. P. KOOKOGEY.

INSULATOR.

No.- 425,513. Patented Apr. 15,1890.

Jig. 5.

MM (P, c,

BY 4 M. ATTORNEY UNITED STATES PATENT OFFICE.

\VILLIAM P. KOOKOGEY, OF BROOKLYN, NE\V YORK, ASSIGNOR TO THE KOOKOGEY ELECTRIC COMPANY.

INSULATOR.

SPECIFICATION forming part of Letters Patent No. 425,513, dated April 15, 1890.

Application filed January 9, 1890. Serial No. 33 6,447 (N0 model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM P. KOOKOGEY, of the city of Brooklyn, county of Kings, and State of New York, have invented a new and useful Insulator for Electric \V iring, of which the following is a specification.

My invention relates to the insulators (usually of glass) to which the wires of a telegraph or electric-light system are attached for support; and it consists, in general, of an insulator of proper insulating material, having combined With it a hood or bonnet over the top of theinsulator of such form that the rainwater is prevented from reaching the wire.

In the form of insulator most commonly used heretofore the water from rain-storms striking the insulator follows down its surface, touching the wire at some point or other, and proceeds from there in a small stream down to the cross-baror other support. These streams of water, as is well kn own,form short circuits to a,certain extent between the wire and the ground, and thus cause a waste of power, which, occurring at so many points, hecomes in the aggregate considerable. The object of the present invention is to prevent this.

In the accompanying drawings, in which the same letters indicate analogous parts, Figure 1 representsa perspective view of an insulator made according to this invention; Figs. 2 and 3, vertical sectional views of the same.

The insulator A is attached in the ordinary way to the telegraph-pole or other support by means of the internal screw a. The line-wire b is designed to be attached around the neck of the insulator A in the ordinary way i. 6., by means of a tie-wire d, which encircles the neck of the insulator and has its two ends wrapped around the line-Wire b. The hood or bonnet f, which, in the form shown in the figures, is designed to be cast as a part of the insulator, has its edge 9 projecting far enough so that the rain, in whatever direction it comes, cannot reach the tie-wire d nor the line-Wire 1) near enough to the insulator so as to collect around the neck of the insulator. The under surface 2', Figs. 2 and 3, of the hood f should be horizontal or inclined upward, so

that the water falling on the top of the hood f will not follow the surface 2', but will drop ed.

The main idea of the invention is that the hood shall both act as a shield directly interposed between the rain and the wire and also shall be of such a form that the rain which strikes the hood will not follow its surface to the wire, but drop off at its edges. There is, however, an added advantage if the hood f be made to project far enough beyond the base of the insulator so that the drip will clear the insulator entirely. The reason for this is that during a storm there always exists upon the surface of theinsulator more or less moisture, forming to some extent a conductor in contact with the wire. It, then, the stream from the hood falls upon the insulator at any point and thence off, the short circuit to the ground is still complete.

A still further advantage is gained in having the outer edge of the hood f turned up. It may be turned up all around the circle, with one or more places arranged somewhere upon the circle to allow the water to drip off without touching the line wire I). This is shown in Fig. 1,in which it is turned up only at two points-via, at the two points m and n in the plane of the line-wire-thus allowing the water to drip off at all other points.

In putting up an insulator of this kind of course the two points on and a must be made to come over the line-wire; but this is easily arranged in the ordinary method of mounting insulators by first screwing the insulator upon its supporting-peg and then placing the peg in the correct position upon the cross-piece of the telegraph-pole or other support.

I claim as my invention 1. An electric-wire insulator having a'shed or hood as part thereof, part of the periphery of said shed being turned upward, substantially as shown, and for the purpose described.

2. An electric-wire insulator having a water-defiecting shed or hood as a part thereof, with its edge turned upward at the points which lie in the verticalplane of theline-wire, substantially as and for the purpose described.

In witness whereof I have hereunto set my hand, at New York city, in the presence of two witnesses, December 31, 1889.

\VM. P. KOOKOGEY. lVitnesses:

ARTHUR E. WALnAnr, SALTER S. CLARK. 

